# SDR P5CA2024111900049

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2024
- Submitted: November 21, 2024
- Operation: Air carrier
- Aircraft: [N853GT](https://openairdocs.org/aircraft/N853GT), registered now
- Make and model: Boeing 747-87UF
- Registry model: [Boeing 747-87UF](https://openairdocs.org/model/boeing-747-87uf) (OpenAirDocs)
- Aircraft serial: 37572
- Aircraft time: 52,630 hours, 7,746 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Engine
- Condition: Unknown
- Location: Zone 400
- Stage of operation: TO
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2024111900049

## Discrepancy

DURING TAKEOFF WHILE POWER PUSHED UP TO STABILIZATION, THRUST ON ENG #3 AND #4 LAGGED AT 25-30% WHILE ENGINES #1 AND #2 CAME UP NORMALLY TO APPROXIMATELY 45% N1(<P>FOUND NO FAULT MAINTENANCE MESSAGE ON PLF OR EF. PERFORMED POWER ASSURANCE TEST AND FOUND THE RESULT IS SATISFACTORY PER AMM 71-00-00-720-802-G01.</P>)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.